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Modeling Posthemorrhagic Hydrocephalus of Prematurity in Rats
Published on: March 28, 2025
Syringomyelia in preterm children with posthemorrhagic occlusive hydrocephalus
Martin Weinzierl1, Dagmar Honnef, Birgit Assmann
1Department of Neurosurgery, University Hospital RWTH Aachen, Aachen, Germany. mrweinzierl@me.com
Insights
Posthemorrhagic hydrocephalus and syringomyelia are a rare combination in preterm infants. Prompt diagnosis and surgical intervention, such as ventriculoperitoneal shunting, can improve outcomes for this condition.
Area of Science:
- Neonatal neurology
- Pediatric neurosurgery
- Developmental neurology
Background:
- Posthemorrhagic hydrocephalus is a known complication in preterm infants.
- The co-occurrence of syringomyelia with posthemorrhagic hydrocephalus is exceptionally rare, with limited previous reports.
Observation:
- Two cases of preterm infants born at 27 and 28 weeks gestation presented with neonatal cerebral hemorrhages.
- Patient 1 developed progressive ataxia, hydrocephalus, and syringomyelia at age 4 years.
- Patient 2 was diagnosed with ventriculomegaly and syringomyelia at 4 weeks of age.
Findings:
- Ventriculoperitoneal shunting led to clinical improvement, reduced ventricular size, and syringomyelia regression in both patients.
- Syringomyelia appears to stem from impaired cerebrospinal fluid drainage, resolving with shunting.
- Post-surgical bleeding complications (subdural hematoma, parenchymal hemorrhage) occurred in both cases.
Implications:
- The association of syringomyelia with posthemorrhagic hydrocephalus may be underestimated.
- Neurological decline in these patients warrants spinal MRI alongside cerebral imaging.
- Careful surgical management is crucial, considering potential risks of bleeding after cerebrospinal fluid pressure reduction.
Objective And Importance:
Whereas posthemorrhagic hydrocephalus is well known after preterm birth, its association with syringomyelia has been reported only once. Here, we describe two additional patients showing this rare constellation.
Clinical Presentation:
The children had been born after 27 and 28 completed weeks of gestation, respectively. Both had developed neonatal cerebral hemorrhages. At the age of 4 years, patient 1 presented with progressive ataxia leading to the diagnosis of internal hydrocephalus and extensive syringomyelia. In patient 2, progressive ventriculomegaly and syringomyelia were diagnosed at the age of 4 weeks.
Intervention:
In both children, ventriculoperitoneal shunting resulted in clinical improvement, decrease of the ventricular size, and regression of the syringomyelia. After surgery, patient 1 developed a subdural hematoma and patient 2 parenchymatous cerebral hemorrhages.
Conclusion:
The combination of syringomyelia and posthemorrhagic hydrocephalus may be more frequent than commonly assumed. Therefore, neurological deterioration may mandate spinal MRI in addition to cerebral MRI. Syringomyelia seems to result from impaired ventricular cerebrospinal fluid drainage as it regresses after ventriculoperitoneal shunting. Bleeding may complicate the postsurgical relaxation of distended brain parenchyma.
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